What to do

So I’ve been dating this guy for 3 months n we’ve been having a lot of fun together I have strong feelings for him n he says he loves me, he’s so far treated me amazing hasn’t done anything wrong. He says I’m his first love n he was talking to a girl a while back but she lived far away so they only texted n she used him so wasn’t nothing serious n he had sex when he was 15, he’s 23 now. So I’m his first serious thing. I have a whole 2 yr old have been w a lot of men but he doesn’t care about any of that. So the issue here is from the start I’ve told him I have bad trust issues bc every guy I’ve been w has cheated. He said it was ok that he would show me that I can trust him n he has proved to me that he’s different but idk I be feeling like he’s talking to girls or something. One day he sent me a screenshot of his messages (I didn’t ask for it) n it was only me n his guy friends n some girl but all it said was that he had unsent the message days ago whenever we didn’t talk for a day bc I had blocked him. (This was before he knew where I lived at or anything) n also that same day we didn’t talk he hearted her pic, idk if it matters bc we weren’t taking. But yea I try so hard to trust him but I can’t he already took me to meet his fam too n he was like u can have my phone check it whenever u want n he just got Instagram when we first talked so he isn’t really out there a lot. I tried to end things bc of my trust I told him I didn’t wanna be annoying all the time but he didn’t let me he was crying n was like no that shows me that u care about us. Also whenever we’re talking about us n he starts talking about me he starts crying n idk what to do I lowkey wanna laugh 😭💀 also I had blocked him last week bc ending things in person wasn’t gonna work so he came n knocked n asked forme 😀